computer revision

computer revision

1. Computer components

   • Examples of computer hardware include central processing units, motherboards, random access memory, video cards, power supplies, hard drives, optical drives, keyboards, monitors, mice and speakers. Computer hardware is all the physical components of a computer as opposed to the digital components, such as software.

2. Secondary storage devices

   • Secondary storage devices consist of media like CDs or DVDs, or physical devices, such as flash memory drives or external hard drives. Older computer systems also used floppy disks or magnetic tapes for secondary storage.

3. Binary units

   • A binary prefix is a unit prefix for multiples of units in data processing, data transmission, and digital information, notably the bit and the byte, to indicate multiplication by a power of 2.

4. Ethical and Cultural Issues

   • An ethical issue brings systems of morality and principles into conflict. Unlike most conflicts that can be disputed with facts and objective truths, ethical issues are more subjective and open to opinions and interpretation.

5. Programming Techniques

   • Programming Techniques. Software designing is very anesthetic phase of software development cycle. The beauty of heart, skill of mind and practical thinking is mixed with system objective to implement design.

6. writing algorithms

   • A prototypical example of an algorithm is the Euclidean algorithm to determine the maximum common divisor of two integers; an example (there are others) is described by the flow chart above and as an example in a later section.